PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASME-B18.2.1Screw,lag

The American Society of Mechanical Engineers · NSN 5305-00-406-9219 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-406-9219 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-406-9219. Primary manufacturer part number: ASME-B18.2.1.
Features
  • Screw,lag — FSC 5305
  • Nonmachine Nominal Thread Diameter: 0.375 INCHES IN
  • Fastener Length: 1.500 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA)
  • Head Height: 0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
  • Shoulder Shape: ROUND FIRST SHOULDER
  • Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,lag, cataloged under National Stock Number 5305-00-406-9219, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-406-9219
Primary Part NumberASME-B18.2.1
Item NameScrew,lag
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusCANCELLED
Nonmachine Nominal Thread Diameter0.375 INCHES IN
Fastener Length1.500 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Head Height0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN
Shoulder ShapeROUND FIRST SHOULDER
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Head StyleHEXAGON
Surface Treatment Document and ClassificationASTM-B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Shoulder Length0.125 INCHES MINIMUM FIRST SHOULDER IN
Hardness Rating60.0 ROCKWELL B MINIMUM OVERALL
Surface TreatmentZINC OVERALL
Width Between Flats0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
Shoulder Diameter0.360 INCHES MINIMUM AND 0.388 INCHES MAXIMUM FIRST SHOULDER IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-145-1064 INTERCHANGEABLE
Screw,lag
5305-00-177-5505 INTERCHANGEABLE
Screw,lag
5305-00-177-5542 INTERCHANGEABLE
Screw,lag
5305-00-177-5578 INTERCHANGEABLE
Screw,lag
5305-00-177-5622230018 INTERCHANGEABLE
Screw,lag
Hillman Group, Inc., the
5305-00-402-5747 INTERCHANGEABLE
Screw,lag
5305-00-402-5748230015 INTERCHANGEABLE
Screw,lag
Hillman Group, Inc., the
5305-00-402-5749 INTERCHANGEABLE
Screw,lag
5305-00-402-5750 INTERCHANGEABLE
Screw,lag
5305-00-402-57571122159 INTERCHANGEABLE
Screw,lag
Fastenal Company
Cross-Reference Index
Part NumberManufacturer
ASME-B18.2.1 The American Society of Mechanical Engineers (USA)
ANSI B18.2.1 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
FF-B-561 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS16992-541 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
1072 Bolt Depot, Inc. (USA)
FF-B-561 TY1ST1GRB General Services Administration Federal Supply Service (USA)
Related Parts
5305-00-145-1064INTERCHANGEABLE
SCREW,LAG
5305-00-177-5505INTERCHANGEABLE
SCREW,LAG
5305-00-177-5542INTERCHANGEABLE
SCREW,LAG
5305-00-177-5578INTERCHANGEABLE
SCREW,LAG
5305-00-177-5622INTERCHANGEABLE
SCREW,LAG
230018
5305-00-402-5747INTERCHANGEABLE
SCREW,LAG
5305-00-402-5748INTERCHANGEABLE
SCREW,LAG
230015
5305-00-402-5749INTERCHANGEABLE
SCREW,LAG
5305-00-402-5750INTERCHANGEABLE
SCREW,LAG
5305-00-402-5757INTERCHANGEABLE
SCREW,LAG
1122159
5305-00-402-5759INTERCHANGEABLE
SCREW,LAG
5305-00-406-5178INTERCHANGEABLE
SCREW,LAG
22261

Frequently Asked Questions

What is NSN 5305-00-406-9219?

NSN 5305-00-406-9219 is a Screw,lag, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-406-9219?

NSN 5305-00-406-9219 has 6 cross-referenced part numbers: ASME-B18.2.1 (The American Society of Mechanical Engineers), ANSI B18.2.1 (American National Standards Institute Incorporated Dba American National Standards Institute), FF-B-561 (Federal Specifications Promulgated by General Services Administration Washington DC), MS16992-541 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 1072 (Bolt Depot, Inc.) and 1 more.

What NSN replaces 5305-00-406-9219?

There are 12 known substitutes for 5305-00-406-9219: 5305-00-145-1064, 5305-00-177-5505, 5305-00-177-5542 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASME-B18.2.1?

Key specifications for ASME-B18.2.1: Nonmachine Nominal Thread Diameter: 0.375 INCHES IN; Fastener Length: 1.500 INCHES NOMINAL IN; Special Features: THREADS: 7 THREADS PER INCH; Material: STEEL OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-406-9219 still in active supply?

NSN 5305-00-406-9219 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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